The Master of the World is approximately 40,000 years old. After he was experimented on by the Plodex ship, he gained different powers. The master has the agility beyond that of a normal human, which he gained after he altered his body. He has enhanced reflexes, that were fast enough to slice Warbird with a sword. His speed can reach 61- 65 mph. His stamina is so high that he can sustain peak physical extertion for several hours before fatigue impairs performance. Also, his strength is enhanced, and he was able to break Sasquatch's arm by, after dodging Sasquatch's attack, grabbing it with both hands and breaking it. He is also a master of hand to hand combat, as he learned the techniques 40,000 years ago. He knows all human pressure points, which was shown when he knocked out Namor the Sub-Mariner with a single punch. His suit also has many benefits, allowing him teleportation and flight. His helmet and battlesuit are composed of an unknown metal, including cybernetic mesh enabling the Master to control Plodex technology through mental commands. Devices within the Masterís helmet and battlesuit enable him to cast illusions disguising his appearance. He is able to create a force field that can ward off attacks. Also, he is able to shoot energy blasts with his suit, and it enables him to disperse electromagnetism, which was shown when he was able to control Guardian I's suit.

Forty thousand years ago, a caveman named Eshu was cast out of his tribe. He wanders the Earth and is soon psionically called to a beacon of an alien ship.
The ship was owned by the Plodex race. After it crashed on the North Pole, it sent out a message, to seek out the dominant life form on Earth. After an exhausting journey, Eshu finds the ship and is captured upon entering it. For thousands of years Eshu was experimented on by the Plodex ship. The experiments were excruciating. He was dissected and reassembled, just to be dissected again. He became more and more intelligent over the years he was experimented on until his mind and body were developed to the peak of perfection, and after some time learned to tap into the ship's systems with his mind, which eventually enables him to take them all over. He finds he is actually unable to leave the ship. He sends out a signal to a member of the Plodex race called Marrina. She responds and brings the superhero team Alpha Flight with her. By this time, Eshu is calling himself The Master of the World. His plans succeed and the Master is able to escape the ship by submarine.
He was no longer bound to the alien ship, but in order to execute his plans for world domination, he would still need the ship's technology. Using his knowledge of the alien technologies, he gains control of Marrina and her Plodex Mate. Alpha Flight's Puck and Marrina, assisted by Namor, the Sub-Mariner, thwarted his plans to dominate the world. The Master vanishes for a short time.
It turned out that he escaped, and in order to preserve his body, entered a state of suspended animation. He was revived from that state by Llan the Sorcerer, and with the help of enzymes from the corpse of Scramble, the Mixed Up Man, rebuilds his body to a perfect human specimen. His next plan was to take over the Canadian government with the alias Joshua Lord, because of the chaos that was trigerred by the Super Power Registration Act. During that time The Master reforms Omega Flight to stop Alpha Flight from getting in his way. The Master finds James MacDonald Hudson entrapped in some sort of dimensional limbo. He returns him from the dead as The Antiguard, in order for The Guardian to kill Alpha Flight and his wife. However, The Guardian, with the help of his wife Heather Hudson, managed to break out of the Master's mental control. The Master seemingly kills himself to avoid prison.
He returns, to cross paths Heroes For Hire and the mercenary team headed by Silver Sable. One of his goals was to kill Iron Fist. This is because the mystical land of K'un Lun, which manifests where Iron Fist is, poses a threat to his plans. He again apparently kills himself, but his death was proven false again. He appears during the Kang Dynasty storyline, where Marrina is glimpsed inside a stasis tube in his laboratory. His alien technology is used in an attempt to protect the cities of the world, but this does not stop earth from being conquered.
The Master dies again, seemingly, at the hands of Warbird.